A heat dissipation device and control method of an integrated electronic hydraulic brake system valve block

Abstract

The application discloses a heat dissipation device and control method for an integrated electronic hydraulic brake system valve block, which comprises a radiator, an engine thermostat, a cylinder head water jacket and a water pump, wherein the radiator is connected with the engine through an oil pipe, the oil inlet pipeline of the radiator is fixedly connected between the water pump and the cylinder head water jacket in the engine, and the oil outlet pipeline of the radiator is fixedly connected in front of the engine thermostat, the patent proposes a heat dissipation device and control method for an integrated electronic hydraulic brake system valve block, based on the judgment result of temperature and pressure identification, the flow of the coolant is controlled to achieve the heat dissipation effect. The water cooling and air cooling are simultaneously realized, the valve core sticking and the control system damage caused by the integrated system overheating in the working process of the integrated electronic hydraulic brake system due to the heat generated by the coil working and the heat generated by the valve core friction are solved. The upper limit of the controllable current is greatly improved, and a train of thought is provided for the design of the integrated electronic hydraulic brake system with large electromagnetic force.

Description

Technical Field

[0001] This invention relates to a valve block heat dissipation device, specifically a heat dissipation device and control method for an integrated electro-hydraulic braking system valve block. Background Technology

[0002] In recent years, with the development of new energy vehicles and intelligent connected vehicles, hydraulic electronic control systems with richer functions and higher integration have developed rapidly, and some solenoid valve control problems have been solved, but related technologies are still imperfect. For example, the problem of solenoid valves generating heat due to coil operation and valve core friction has not yet been effectively solved.

[0003] Existing heat dissipation devices cannot effectively integrate with the valve block of the integrated electro-hydraulic braking system to achieve a good cooling effect. This can easily cause the solenoid valve to jam due to overheating during operation, resulting in poor control performance. Secondly, with the development of technology, the integrated electro-hydraulic braking system requires the coil to provide a larger current to provide a larger electromagnetic force, which inevitably leads to system overheating. Furthermore, the system layout is integrated, including not only metal parts but also circuit boards, plastic shells, etc. Therefore, it is essential to ensure that the system temperature is controllable. Summary of the Invention

[0004] The purpose of this invention is to provide a heat dissipation device and control method for an integrated electro-hydraulic braking system valve block, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A heat dissipation device and control method for an integrated electro-hydraulic braking system valve block, wherein the radiator is connected to the engine through an oil pipe, the oil inlet pipe of the radiator is fixedly connected between the water pump and the cylinder head water jacket in the engine, and the oil outlet pipe of the radiator is fixedly connected in front of the engine thermostat.

[0007] As a further aspect of the present invention: the radiator includes a normally closed valve B, a normally closed valve A, a pressure sensor, a temperature sensor, an exhaust valve, and a heat dissipation assembly. The normally closed valve B and normally closed valve A are provided on both sides of the heat dissipation assembly. The normally closed valve B and normally closed valve A are fixedly connected to the oil pipes on both sides of the heat dissipation assembly. The pressure sensor and temperature sensor are provided between the normally closed valve A and the heat dissipation assembly. The pressure sensor and temperature sensor are fixedly connected to the oil pipe between the normally closed valve A and the heat dissipation assembly. An exhaust valve is provided on one side of the normally closed valve A. The exhaust valve is fixedly connected to the oil pipe on one side of the normally closed valve A.

[0008] As a further aspect of the present invention: the heat dissipation assembly includes a manifold, fins, a through groove, and a heat dissipation tank. Manifolds are provided on both sides of the heat dissipation tank and are connected to the heat dissipation tank through the manifolds. Fins are provided on the other two sides of the heat dissipation tank and are fixedly connected to the heat dissipation tank. A through groove is provided in the heat dissipation tank and is integrally formed on the heat dissipation tank.

[0009] As a further aspect of the present invention: a heat dissipation component is provided on one side of the control valve block, one side of the heat dissipation component overlaps with the control valve block, and the solenoid valve and coil are located in the through groove.

[0010] As a further aspect of the present invention: In the control logic, when the temperature sensor detects that the operating temperature of the integrated electro-hydraulic braking system valve block exceeds 80°C, both normally closed valves A and B are open, allowing coolant to flow through the control valve block at maximum flow rate, thus rapidly cooling the valve block. When the temperature sensor detects that the operating temperature of the integrated hydraulic control system valve block is below 80°C, the pressure sensor starts working. When the detected pressure in the pipeline is less than threshold value A, the pressure inside the control valve block housing is less than atmospheric pressure. To prevent the casing from being squeezed, normally closed valve A opens, allowing coolant to flow into the radiator to balance the pressure difference. Once the pressure difference is balanced, normally closed valve A closes, and the pressure sensor continues monitoring. When the monitored pressure exceeds threshold B, the internal pressure of the control valve casing exceeds atmospheric pressure. To prevent the casing from expanding under stress, normally closed valve B opens, allowing coolant to flow out of the radiator to relieve excess pressure. Once the pressure difference is balanced, normally closed valve B closes, and the pressure sensor continues monitoring. When the monitored pressure exceeds threshold A but is less than threshold B, both normally closed valves A and B close completely.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1) This patent proposes a heat dissipation device and control method for an integrated electro-hydraulic braking system valve block. Based on the judgment results of temperature and pressure identification, the flow of coolant is controlled to achieve the heat dissipation effect.

[0013] 2) It achieves simultaneous heat dissipation through water cooling and air cooling, solving the problems of valve core jamming caused by coil heat generation and valve core friction heat generation during the operation of integrated electro-hydraulic braking system, as well as control system damage caused by overheating of integrated system.

[0014] 3) It significantly increases the upper limit of controllable current, providing ideas for the design of integrated electro-hydraulic braking systems with large electromagnetic forces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the heat dissipation device and control method for a valve block in an integrated electro-hydraulic braking system.

[0016] Figure 2This is a schematic diagram of the control valve block in a heat dissipation device and control method for an integrated electro-hydraulic braking system valve block.

[0017] Figure 3 This is a schematic diagram of the heat dissipation component in a heat dissipation device and control method for a valve block of an integrated electro-hydraulic braking system.

[0018] Figure 4 This is a schematic diagram of the heat dissipation device and control method for an integrated electro-hydraulic braking system valve block.

[0019] Figure 5 This is a schematic diagram of the logic diagram in the heat dissipation device and control method of an integrated electro-hydraulic braking system valve block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-5 In this embodiment of the invention, a heat dissipation device and control method for an integrated electro-hydraulic braking system valve block includes a radiator 1, an engine thermostat 2, a cylinder head water jacket 3, a water pump 4, a control valve block 100, and a heat dissipation assembly 200.

[0022] The radiator 1 is connected to the engine via an oil pipe. The oil inlet pipe of the radiator 1 is fixedly connected between the water pump 4 and the cylinder head water jacket 3 in the engine, and the oil outlet pipe of the radiator 1 is fixedly connected in front of the engine thermostat 2.

[0023] The radiator 1 includes a normally closed valve B11, a normally closed valve A12, a pressure sensor 13, a temperature sensor 14, an exhaust valve 15, and a heat dissipation assembly 200. The heat dissipation assembly 200 has normally closed valves B11 and A12 on both sides. The normally closed valves B11 and A12 are fixedly connected to the oil pipes on both sides of the heat dissipation assembly 200. The normally closed valve A12 and the heat dissipation assembly 200 have pressure sensor 13 and temperature sensor 14 between them. The pressure sensor 13 and temperature sensor 14 are fixedly connected to the oil pipe between the normally closed valve A12 and the heat dissipation assembly 200. An exhaust valve 15 is provided on one side of the normally closed valve A12. The exhaust valve 15 is fixedly connected to the oil pipe on one side of the normally closed valve A12.

[0024] The heat dissipation assembly 200 includes a manifold 201, fins 202, a through groove 203, and a heat dissipation tank 204. The heat dissipation tank 204 has manifolds 201 on both sides, which are connected to the heat dissipation tank 204. The heat dissipation tank 204 has fins 202 on the other two sides, which are fixedly connected to the heat dissipation tank 204. The heat dissipation tank 204 has a through groove 203, which is integrally formed on the heat dissipation tank 204.

[0025] The control valve block 100 includes a valve block 101, a coil 102 and a solenoid valve 103. Multiple sets of solenoid valves 103 are provided on one side of the valve block 101. One end of the solenoid valve 103 is fixedly connected to the valve block 101. A coil 102 is provided on one side of the solenoid valve 103. The coil 102 is sleeved on the outside of the solenoid valve 103.

[0026] A heat dissipation component 200 is provided on one side of the control valve block 100. One side of the heat dissipation component 200 overlaps with the control valve block 100, and the solenoid valve 103 and the coil 102 are located in the through groove 203.

[0027] The working principle of this invention is:

[0028] In the control logic, when the temperature sensor 14 detects that the operating temperature of the integrated electro-hydraulic braking system valve block exceeds 80°C, both normally closed valves A12 and B11 are open, allowing coolant to flow through the control valve block 100 at maximum flow rate, thus rapidly cooling the valve block. When the temperature sensor 14 detects that the operating temperature of the integrated hydraulic control system valve block is below 80°C, the pressure sensor 13 starts working. When the detected pressure in the pipeline is less than the threshold value A, the internal pressure of the control valve block 100 housing is less than atmospheric pressure. To prevent the housing from being squeezed, the normally closed valve... Valve A12 opens, allowing coolant to flow into the radiator tank 204 to balance the pressure difference. After the pressure difference is balanced, normally closed valve A12 closes, and pressure sensor 13 continues to monitor. When the monitored pressure is greater than threshold B, the internal pressure of the control valve fast 100 casing is greater than atmospheric pressure. To prevent the casing from expanding under pressure, normally closed valve B11 opens, allowing coolant to flow out of the radiator tank 204 to relieve excess pressure. After the pressure difference is balanced, normally closed valve B11 closes, and pressure sensor 13 continues to monitor. When the monitored pressure is greater than threshold A but less than threshold B, both normally closed valves A12 and B11 close.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat dissipation control method for a valve block in an integrated electro-hydraulic braking system, characterized in that, A heat dissipation device for an integrated electro-hydraulic braking system valve block is provided. The heat dissipation device for the integrated electro-hydraulic braking system valve block includes a radiator (1), an engine thermostat (2), a cylinder head water jacket (3), and a water pump (4). The radiator (1) is connected to the engine through an oil pipe. The oil inlet pipe of the radiator (1) is fixedly connected between the water pump (4) and the cylinder head water jacket (3) in the engine. The oil outlet pipe of the radiator (1) is fixedly connected before the engine thermostat (2). The radiator (1) includes a normally closed valve B (11), a normally closed valve A (12), a pressure sensor (13), a temperature sensor (14), an exhaust valve (15), and a heat dissipation assembly (200). The heat dissipation assembly (200) is provided with normally closed valve B (11) and normally closed valve A (12) on both sides. The normally closed valve B (11) A normally closed valve A (12) is fixedly connected to the oil pipes on both sides of the heat dissipation assembly (200). A pressure sensor (13) and a temperature sensor (14) are provided between the normally closed valve A (12) and the heat dissipation assembly (200). The pressure sensor (13) and the temperature sensor (14) are fixedly connected to the oil pipes between the normally closed valve A (12) and the heat dissipation assembly (200). An exhaust valve (15) is provided on one side of the normally closed valve A (12). The exhaust valve (15) is fixedly connected to the oil pipe on one side of the normally closed valve A (12). The heat dissipation assembly (200) includes a manifold (201), fins (202), a through groove (203), and a heat dissipation tank (204). The heat dissipation tank (204) has manifolds (201) on both sides, which are connected to the heat dissipation tank (204). The heat dissipation tank (204) has fins (202) on the other two sides, which are fixedly connected to the heat dissipation tank (204). The heat dissipation tank (204) has a through groove (203), which is integrally formed on the heat dissipation tank (204). The control valve block (100) has a heat dissipation component (200) on one side, which overlaps with the control valve block (100). The solenoid valve (103) and the coil (102) are located in the through groove (203). The heat dissipation control method for the integrated electro-hydraulic braking system valve block includes: when the working temperature of the integrated electro-hydraulic braking system valve block collected by the temperature sensor (14) exceeds 80°C, normally closed valves A (12) and B (11) are all in the open state, and the coolant flows through the control valve block (100) at the maximum flow rate, so that the valve block is cooled down quickly; when the working temperature of the integrated hydraulic control system valve block collected by the temperature sensor (14) is lower than 80°C, the pressure sensor (13) starts to work, and when the collected pressure in the pipeline is less than the threshold value A When the pressure inside the control valve block (100) housing is less than atmospheric pressure, the normally closed valve A (12) opens to prevent the housing from being squeezed, and the coolant flows into the radiator (204) to balance the pressure difference. After the pressure difference is balanced, the normally closed valve A (12) closes, and the pressure sensor (13) continues to monitor. When the monitored pressure is greater than the threshold value B, the pressure inside the control valve block (100) housing is greater than atmospheric pressure. To prevent the housing from expanding under force, the normally closed valve B (11) opens to allow the coolant to flow out of the radiator (204) to relieve excess pressure. After the pressure difference is balanced, the normally closed valve B (11) closes, and the pressure sensor (13) continues to monitor. When the monitored pressure is greater than the threshold value A and less than the threshold value B, both the normally closed valve A (12) and the normally closed valve B (11) close.

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